CN106868968B - A kind of non-flexible foundation bituminous pavement entirety thick plate structure construction method - Google Patents
A kind of non-flexible foundation bituminous pavement entirety thick plate structure construction method Download PDFInfo
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- CN106868968B CN106868968B CN201710199578.8A CN201710199578A CN106868968B CN 106868968 B CN106868968 B CN 106868968B CN 201710199578 A CN201710199578 A CN 201710199578A CN 106868968 B CN106868968 B CN 106868968B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
Abstract
The invention discloses a kind of non-flexible foundation bituminous pavement entirety thick plate structure construction methods, it is desirable to provide a kind of bearing capacity and the strong non-flexible foundation bituminous pavement entirety thick plate structure construction method of anti-water damage ability.It includes the following steps: that roadbed processing, subbase construction, the construction of semi-rigid or rigid base, semi-rigid or rigid base's health, the milling of semi-rigid or rigid base's surface soft layer are removed and cleaned, the construction of permeable layers pitch sprinkling, waterproof bond stress absorbed layer, the construction of adhesion coating spread, pitch cutting optimal, adhesion coating spread, asphalt uplayer are constructed.The present invention improves non-flexible foundation bituminous pavement bearing capacity and anti-water damage ability, non-flexible foundation and asphalt surface course is prevented to be layered, non-flexible foundation bituminous pavement early disease, Water Damage, non-flexible foundation construction quality variation problem are effectively prevented, using effect is improved and prolongs the service life.
Description
Technical field
The present invention relates to highway construction technology fields, more particularly, to a kind of non-flexible foundation bituminous pavement entirety slab knot
Structure construction method.
Background technique
Non-flexible foundation bituminous pavement includes semi-rigid asphalt pavement, composite asphalt pavement, rigid pavement pitch
Structure etc. at table is the most common pavement structure form of highways and streets pavement engineering, since non-flexible foundation mostly uses
Cementing stiff mix is formed through decking and rolling, gathered materials by mixture thickness pave with construction, compaction technology, health,
Weather air speed influence gathers materials within the scope of 0 35mm of surface and is easy isolation, paves, surface layer moisture content scatters and disappears in roller compaction process, fine aggregate
It is detached from coarse aggregate to sink, the ratio of mud increases, is uneven after moisturizing, rolls and reaches compactness and make coarse aggregate crushing particle breakdown without thin
Gathering materials, it is cementing to fill, and health surface dry and wet is irregular, cleans before spread priming oil saturating etc. under surface dirt blockage structure standoff effects
Mass defect exists, and it is uneven to be directed at low strength and intensity within the scope of non-flexible 0 35mm of Asphalt Pavement Base surface, part
Hole greatly and hole by dust filling, without cementing, loosely surface is smooth, cause that permeable layers bitumen construction effect is poor, non-flexible pitch
Weak intercalated layer is formed between sub-surface surface and bitumen layer, reduces base's bearing capacity, by non-flexible Asphalt Pavement Base and drip
Cyan layer separates, and forms the superposition that non-flexible Asphalt Pavement Base adds two plates of bitumen layer in structure；It needs to examine from structure stress
Consider and increase road surface structare layer overall thickness, is especially influenced during highway operation by Atmospheric precipitation, capillary water, air humidity, especially
It is during rainy season in the presence of non-flexible Asphalt Pavement Base surface void, intensity soft layer, bitumen layer interstitial water, vehicle
The soft layer in high pressure flowing pressure and dynamic mobile load road pavement structure that traveling generates generates great destruction, non-flexible
Disease will occur for Asphalt Pavement Base surface soft layer and weak part, especially in the case where lane is canalized, wheelmark road surface
Band generates frost boiling, fragmentation, bitumen layer passage, gathers around packet, cracking, and base slowly separates with bitumen layer, road surface structare layer shear resistance
Reduce and then cause road surface early damage.In order to prevent and treat non-flexible 0 35mm soft layer bring knot of Asphalt Pavement Base surface
Structure bearing capacity reduces, influences the performance of road surface Plate properties and solve the problems, such as road surface early damage, eliminates at present to a certain extent
By increasing bitumen layer pavement thickness, the number of plies slows down road surface early damage and reduces single layer asphalt mixture segregation, unevenly asks
Topic saves construction investment and operation maintenance cost, builds life cycle management road surface, need to improve to existing construction method.
Summary of the invention
The purpose of the present invention is intended to overcome the shortcomings of the prior art, and providing one kind can effectively reduce bitumen layer making
Thickness and the reduction bitumen layer number of plies, provide even intensity, coarse, smooth, closely knit non-flexible foundation and substrate surface, prevent from dripping
There is disease and destruction in green road surface early stage, and the non-flexible foundation of construction Yu bituminous pavement operation maintenance cost is effectively greatly lowered
Bituminous pavement entirety thick plate structure construction method.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of non-flexible foundation bituminous pavement entirety thick plate structure construction method comprising following steps:
Step 1: roadbed processing:
It selects qualified filler compaction in layers to defined compactness, has the non-flexible of high-grade highway grade or more
Base Asphalt Pavement roadbed should make hard material reinforcement, heavy ramming processing to roadbed；It carries out draining and capillary water is effectively reduced
Measure processing guarantees that roadbed modulus of resilience value is constant in lifetime；
Step 2: subbase construction:
Subbase construction is carried out on roadbed, underlayment determines maximum dry density using vibration moulding method, broken using gradation
Stone, with a thickness of 15 25cm；When using Stabilized Materials as underlayment, with a thickness of 10 20cm, while rubber tire pressure road is configured
Machine carries out rubbing and rolls, and improves base roadbed and rolls effect；
Step 3: the construction of semi-rigid or rigid base:
The construction of semi-rigid or rigid base is carried out on underlayment, semi-rigid or rigid base should be in the delay of mixture
An interior integral construction is completed；Pneumatic-tired rollers are configured simultaneously carry out rubbing and roll, improve and compactness of subbase and roll effect；
Step 4: semi-rigid or rigid base's health:
Health material is covered in the semi-rigid or rigid base that construction is completed, covering health material should be absorption water material
Material plus plastic film keep moisture content and temperature with benefit；Semi-rigid type base health is no less than 7 days, and rigid base's health is no less than 14
It；
Step 5: the milling of semi-rigid or rigid base's surface soft layer is removed and is cleaned:
(1) milling of semi-rigid or rigid base's surface soft layer is reconnoitred except thickness:
Check that flatness absolute value, surface coarse aggregate isolate thickness, coarse aggregate by core boring sampling, 8 10 meters of double check with a cores
Maximum particle diameter, vibrated roller cause coarse aggregate crushing in surface layer to decompose, and the dimensions such as partial size, laitance thickness are comprehensive to determine milling except surface
Soft layer numerical value；
(2) inserted link hanging wire:
Surface soft layer thickness value is removed by determining to mill, uses screw rod drill rod solid along longitudinal direction in semi-rigid or rigid base two sides
Determine wire, wire is made to tighten no downwarp, removes semi-rigid or rigid base's surface soft layer thickness reference line as milling；
(3) milling of semi-rigid or rigid base's surface soft layer removes:
According to the reference line that inserted link hanging wire determines, using wide cut milling machine by milling except thickness milling removes semi-rigid or rigid base
Surface soft layer, and make to leave rough surface；
(4) it cleans milling and removes face:
After the milling of semi-rigid or rigid base's surface soft layer removes, the milling face of removing is cleaned with strength road sweeper, after cleaning
The dust and discrete particles material left are cleaned with 9 cubes or more of air compressor machine again；
(5) detection cleans milling and removes face quality:
Semi-rigid or rigid base surface cleans milling except behind face, arrangement engineers and technicians are to the milling after cleaning except face carries out
Hauling type walking is visually inspected, and when weak point or face are left in discovery part, must be removed again with milling machine milling, with strength road sweeper to milling
Except face is cleaned, the dust and discrete particles material left are cleaned with 9 cubes or more of air compressor machine again after cleaning；Check part
When leaving weak point or face, it is equipped with deflection testing, qualitative variability point is determined with the numerical value difference between single-point, and gives milling and disappears
It removes, clean；
(6) to milling except face dust suction, water is clean, dust suction again:
After removing face dust suction to milling with Strongh vacuum cleaner, it is clean that water is rinsed with clean water, again with strong after substantially dry
Power dust catcher is to water face cleaning dust suction, immediately following construction spread permeable layers pitch, to cannot spread permeable layers pitch in time, need to take and arrange
It applies and the working face after the clean dust suction of water is protected, prevent secondary pollution from leaving hidden danger of quality；
Step 6: permeable layers pitch sprinkling:
Milling is except face dust suction, water is clean, again after dust suction, immediately following construction spread permeable layers pitch；
Step 7: the construction of waterproof bond stress absorbed layer:
The construction of permeable layers pitch sprinkling finishes, and constructs immediately following construction waterproof bond stress absorbed layer；
Step 8: the construction of pitch cutting optimal:
The construction of waterproof bond stress absorbed layer finishes, after spraying adhesion coating pitch, to the qualitative variability point of milling again or change
Antarafacial, being paved in advance with cutting optimal bitumen specifications material is densified to regulation compactness and makes up a deficiency concordantly, is sprinkled with sticking layer oil, full width width is tight
With pitch cutting optimal of constructing；
Step 9: asphalt uplayer construction:
The construction of pitch cutting optimal finishes, after spraying adhesion coating pitch, immediately following construction asphalt uplayer.
Preferably, the underlayment uses framework compact graded broken stone or framework compact type binder；The semi-rigid
Property base use framework compact type or the cement stabilized type base with anti-cracking function gradation, grinding coagulation soil matrix layer, concrete
Layer.
Preferably, the underlayment by production mix proportion and increases optimum moisture content 34 hundred using pellet mixing machine
Shelving after the water content mix of branch, material heap use the material covering with water conservation, water proof, and enclosing material time is no less than 5 days, material heap
When surface layer mixture moisture content changes, moisture content should be supplemented and keep water content.
Preferably, the waterproof bond stress absorbed layer uses modified emulsified asphalt slurry seal or modified asphalt macadam
Sealing.
The bitumen layer construction number of plies under non-flexible foundation bituminous pavement entirety thick plate structure construction method is up to two layers, i.e.,
Upper and lower surface layer (the middle surface layer in tradition is no longer constructed)；If the magnitude of traffic flow is small, upper layer is only constructed just by calculating.
Preferably, the equipment that heavy ramming processing uses in the step 1 is all kinds of not less than 50 tons for work quality
Towed or self-propelled heavy road roller.
Preferably, the self-propelled or towed vibrating pressure that the road roller working quality in the step 3 is no less than 50 tons
Road machine.
Preferably, the step 8, the adhesion coating pitch in step 9 are all made of modified pitch.
The step 7, step 8, the waterproof bond stress absorbed layer in step 9, following bitumen layer, asphalt thickness above
Structure type, can be determined by calculation according to the predicted value of the magnitude of traffic flow, climatic condition: Ying Youxuan waterproof bond stress inhale
Receive layer；Waterproof bond stress absorbed layer adds face bitumen layer；Waterproof bond stress absorbed layer adds following bitumen layer plus face pitch
The type or other bituminous pavement top structure types of the bituminous texture surface layer of layer.
Compared with prior art, the present invention has the advantage that
1, the present invention using non-flexible foundation and bitumen layer as a structure sheaf theory of thick plates carries out calculating consideration, and existing
Pavement asphalt structure sheaf compares, and can reduce asphalt thickness, reduces the bitumen layer construction number of plies, improves Base Smoothness and improve
Surface evenness, roughness save construction investment and operation maintenance of surface cost, avoid road surface early damage, improve work efficiency, prolong
Long service life.
2, this invention removes semi-rigid or rigid base surface soft layer and qualitative variability point, non-flexible base is avoided
Layer Protective Measures of Bitumen Pavement Initial Damage, makes non-flexible foundation bituminous pavement be provided with the minimum long-life feature of cost in life cycle.
Although milling increases cost except semi-rigid or rigid base's surface soft layer, milling the waste material removed can also be utilized, and reduce pitch
Thickness degree and the construction number of plies, COMPREHENSIVE CALCULATING overall cost saves more construction fund, and quality guarantee rate is also improved.
3, the present invention is overall improves road surface structare layer intensity, reduces the road surface medium-capital overhauling maintenance costs of operation phase, avoids
Maintenance influences highway capacity, and further energy-saving and emission-reduction generate preferable social and economic benefit.
4, the function that the present invention improves non-flexible foundation bituminous pavement guarantees and reliable in quality degree, elimination are non-flexible at present
The hidden danger of quality that Base Asphalt Pavement is likely to occur.
5, the present invention changes suitable for highway, the newly-built of Municipal Road Engineering, reorganization and expansion, medium-capital overhauling, cement concrete pavement
The projects such as bituminous pavement have good economic results in society after popularization.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the cross-section structure of non-Asphalt Pavement with Flexible Base.
Fig. 2 is that non-flexible foundation rejects surface soft layer schematic diagram.
The relationship of the corresponding structure of label in above-mentioned each figure is as follows:
1- asphalt uplayer, thickness h 1；2- pitch cutting optimal, thickness h 2；3- waterproof bond stress absorbed layer, thickness h 3；
4- permeable layers pitch, thickness h 4；5- semi-rigid type base or rigid base, thickness h 5；Semi-rigid type base or rigid base's construction are mated formation
Thickness H, H-h5 are equal to soft layer thickness h 7；6- underlayment, thickness h 6；7- roadbed.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
A kind of non-flexible foundation bituminous pavement entirety thick plate structure construction method, structure is as shown in Figs. 1-2, including following
Sequential steps:
Step 1: the processing of roadbed 7:
The packing technique index that roadbed uses is filled, qualified filler must be selected by design and job specfication index request
Compaction in layers has the non-flexible foundation bituminous pavement roadbed of high-grade highway grade or more to defined compactness, should
Heavy ramming processing is made to bedding, embankment certain altitude level, roadbed.Roadbed fills reinforcements using hard material, carry out drain and
Capillary water measure processing is effectively reduced, guarantees that roadbed modulus of resilience value is constant in lifetime.
Step 2: underlayment 6 is constructed:
Processing terminate for roadbed, and carry out subbase construction: underlayment determines maximum dry density using vibration moulding method, works as use
When graded broken stone, thickness can be 15 25cm, and type answers preferred framework compact type；Production mix proportion must be pressed using pellet mixing machine
And increasing shelving after 34 percentage points of optimum moisture content of water content mix, material heap uses the material with water conservation, water proof to cover
Lid, enclosing material time are no less than 5 days, when material heap surface layer mixture moisture content changes, should be supplemented moisture content and be kept water content.Using steady
When determining class material as underlayment, with a thickness of 10 20cm, construct by semi-rigid type base or bitumen construction requirement.Underlayment
Paving must be paved using pellet paver, and configuration pneumatic-tired rollers carry out rubbing and roll, and improved base roadbed and rolled function
Effect.
Step 3: semi-rigid or rigid base 5 constructs:
Subbase construction terminates, and carries out semi-rigid or rigid base and constructs first 36 hours, must repeatedly be spilt underlayment
Water-wet profit prevents the dry base mixture moisture content that absorbs of underlayment from causing cracking and aquation insufficient.Semi-rigid type base coarse aggregate
31.5mm(square hole screen can be used in maximum particle diameter), framework compact type or the gradation with cracking resistance, effectively control fine aggregate with
Binder cement consumption makes semi-rigid type base have the effect of inhibiting Temperature Cracks effect.Construction of semi-rigid base pavement thickness
For design thickness plus 35mm or empirical statistics data；Rigid base's construction pavement thickness is that design thickness adds 5 10mm, specific to increase
Adding thickness can be determined by test section and investigation statistics.Semi-rigid type base is taken according to construction pavement thickness and paves by several times, and one
Secondary vibroroller cmpacting forms or lower layer's land leveller paves, convex block vibrated roller rolls, upper layer paver paves, heavy-duty shocks press road
The molding of machine grinding compacting.Semi-rigid type base must continuous construction finishes upper and lower level simultaneously within stiff mix delay time, protects
It holds upper and lower level effectively to combine, so that semi-rigid type base is become the structure of a level, cannot make because of construction in layer technique semi-rigid
Base is divided into two or more level plate superpositions.
Construction of semi-rigid base, which must configure pneumatic-tired rollers, to carry out rubbing and rolls, and improves and compactness of subbase and rolls effect.
Semi-rigid or rigid base's design thickness is calculated according to the magnitude of traffic flow, the bituminous sheaths number of plies and asphalt thickness by mathematical model
It determines.
Step 4: semi-rigid or rigid base's health:
The construction of semi-rigid or rigid base finishes, and according to Surface hardened layer degree, timely uses the covering that water suction is moist in advance
Material covering watering health, covering health material should be absorption water material and add plastic film, keep humidity in preserving period with benefit
And temperature.Semi-rigid type base health is no less than 7 days, and rigid base's health is no less than 14 days.
Step 5: the milling of semi-rigid or rigid base's surface soft layer is removed and is cleaned:
(1) milling of semi-rigid or rigid base's surface soft layer is investigated except thickness:
Checked by core boring sampling, along 8 10 meters of double check with a cores of length flatness absolute values, surface coarse aggregate isolate thickness,
Maximum size of coarse aggregate, vibrated roller cause coarse aggregate crushing in surface layer to decompose the dimensions such as partial size, laitance thickness, are eliminated with maximum
Hidden danger of quality, strength reduction layer and be unevenly target, keep semi-rigid or rigid base from milling except after the soft layer of surface uniformly,
Closely knit, smooth, coarse is principle, determines the milling of semi-rigid or rigid base's surface soft layer except thickness.It is thick for semi-rigid type base
Aggregate maximum material diameter is 31.5mm's, and milling may be selected except with a thickness of 20 ~ 35mm；Rigid base may be selected milling and remove 5 10mm, specifically
Milling divider value should determine by probe analysis.
Flatness absolute value is checked along 8 10 meters of double check with a cores of length, and mode is to be drawn to set a meter font along road surface with line, wide
Degree is wide with road surface, and length is 8 10 meters, and the relative position then detected between each line and road surface is poor, final to obtain the flat of road surface
Whole degree absolute value.
(2) inserted link hanging wire:
To guarantee that the milling of semi-rigid or rigid base's surface soft layer is removed except thickness is milled by the thickness of probe, few milling
Weak groundwork thickness, many millings leave soft layer hidden danger of quality, need to be milled according to inquiry agency except soft layer thickness data, in conjunction with road
Face vertical section, the requirement of plane geometry data target, fix (spacing with screw rod drill rod along longitudinal direction in semi-rigid or rigid base two sides
10m, 5m, 2.5m can be selected according to straight line, horizontal curve, radius of vertical curve) wire, so that wire is tightened no downwarp, as milling
Except semi-rigid or rigid base's surface soft layer thickness reference line.
(3) milling of semi-rigid or rigid base's surface soft layer removes:
Reference line is removed according to semi-rigid or rigid base's surface soft layer thickness the milling of inserted link hanging wire mark, using wide cut
Milling machine, except thickness milling removes semi-rigid or rigid base's surface soft layer, and makes to leave rough surface, smooth by milling.
(4) it cleans milling and removes face:
After the milling of semi-rigid or rigid base's surface soft layer removes, the milling face of removing is cleaned with strength road sweeper, after cleaning
The dust and discrete particles material left are cleaned with 9 cubes or more of air compressor machine again.
(5) detection cleans milling and removes face quality:
Semi-rigid or rigid base surface cleans milling except behind face, arrangement strong sense of responsibility, work careful and responsible, technology service water
High engineers and technicians are put down to the milling after cleaning except face carries out hauling type walking visual inspection, discovery part leave weak point or
When face, it must be removed, the milling face of removing be cleaned with strength road sweeper, again with 9 cubes or more of sky after cleaning with milling machine milling again
Press cleans the dust and discrete particles material left.When checking that weak point or face are left in part, it can be equipped with deflection testing, with single-point
Between numerical value difference determine qualitative variability point, and give milling eliminate, clean.
(6) to milling except face dust suction, water is clean, dust suction again:
After detection cleaning milling removes face quality, to prevent dust, dust blocking milling from removing rear semi-rigid or rigid base's structure hole
Gap, after removing face dust suction to milling with Strongh vacuum cleaner, also need to be rinsed water with clean water it is clean, again with strength after substantially dry
Dust catcher is to water face cleaning dust suction, immediately following construction spread permeable layers pitch, to cannot spread permeable layers pitch in time, need to take measures
Working face after the clean dust suction of water is protected, prevents secondary pollution from leaving hidden danger of quality.
Step 6: 4 spread of permeable layers pitch:
To the milling of semi-rigid or rigid base's surface soft layer except face Strongh vacuum cleaner dust suction, water is clean, again after dust suction, closely follows
The dosage of construction spread permeable layers pitch, permeable layers pitch is determined according to experiment.
Step 7: waterproof bond stress absorbed layer 3 is constructed:
The construction of permeable layers pitch sprinkling finishes, and can closely follow construction waterproof bond stress absorbed layer, water-proof tack coat stress absorption
Layer should preferentially use modified emulsified asphalt slurry seal or modified asphalt macadam sealing, and general thickness is 5 15mm.
Step 8: pitch cutting optimal 2 is constructed:
The construction of waterproof bond stress absorbed layer finishes, after spraying adhesion coating pitch, to the qualitative variability point of milling again or change
Antarafacial, being paved in advance with cutting optimal bitumen specifications material is densified to regulation compactness and makes up a deficiency concordantly, is sprinkled with sticking layer oil, full width width is tight
With pitch cutting optimal of constructing.Cutting optimal should preferentially select middle surface layer modified pitch specification or the modified drip of more rubbles in specification regulation
Green concrete or other types of asphalt macadam, bituminous concrete, 4 8cm of general thickness.
Step 9: asphalt uplayer 1 is constructed:
The construction of step 8 pitch cutting optimal finishes, and closely follows construction asphalt uplayer after spraying adhesion coating pitch.Upper layer should be preferential
Select the bitumen layer structure type of modified pitch abrasion layer specification type or other structures, 4 6cm of general thickness.
The bitumen layer construction number of plies under non-flexible foundation bituminous pavement entirety thick plate structure construction method is up to two layers, i.e.,
Upper and lower surface layer (the middle surface layer in tradition is no longer constructed)；If the magnitude of traffic flow is small, sealed by calculating only construction upper layer or rubble
Layer is just.
The heavy ramming equipment that uses of processing is not less than 50 tons of all kinds of towed or voluntarily for work quality in the step 1
Formula heavy road roller.
The self-propelled or towed vibratory roller that heavy road roller work quality in the step 3 is no less than 50 tons.
Preferred embodiment as the method for the present invention:
Semi-rigid type base in above-mentioned steps 3 should be preferably with the cement stabilized macadam base of cracking resistance gradation.
Preferred embodiment as the method for the present invention:
Adhesion coating pitch in the step 8, step 9 answers preferred modified pitch.
Preferred embodiment as the method for the present invention:
The step 7, step 8, the waterproof bond stress absorbed layer in step 9, following bitumen layer, pitch thickness above
Degree, structure type, can be determined by calculation, Ying Youxuan waterproof bond stress according to the predicted value of the magnitude of traffic flow, climatic condition
Absorbed layer；Waterproof bond stress absorbed layer adds face bitumen layer；Waterproof bond stress absorbed layer adds following bitumen layer to drip plus face
The type of the bituminous texture surface layer of cyan layer or other bituminous pavement top structure types.
By the non-flexible foundation bituminous pavement that present invention construction is formed, the quantity of bitumen layer, thickness are substantially reduced, are dripped
Green material dosage is drastically reduced, and is substantially not in Water Damage, frost boiling, broken in the case where identical service life
It splits, bitumen layer passage, the early diseases problem such as gather around packet, cracking, not only consumptive material dosage reduces, and saves construction investment, and maintenance
Workload greatly reduces, and maintenance cost can reduce by 80% or more.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (2)
1. a kind of non-flexible foundation bituminous pavement entirety thick plate structure construction method, it is characterised in that the following steps are included:
Step 1: roadbed processing:
It selects qualified filler compaction in layers to defined compactness, has the non-flexible foundation of high-grade highway grade or more
Bituminous pavement roadbed makees hard material reinforcement, heavy ramming processing to roadbed；It carries out draining and is effectively reduced at capillary water measure
Reason guarantees that roadbed modulus of resilience value is constant in lifetime；
Step 2: subbase construction:
Processing terminate for roadbed, carries out subbase construction, and underlayment determines maximum dry density using vibration moulding method, when using gradation
When rubble, with a thickness of 15 25cm, type selects framework compact type；Using pellet mixing machine by production mix proportion and increase by 34
Shelving after the water content mix of percentage point, material heap use the material covering with water conservation and water proof, and enclosing material time is no less than 5 days,
When material heap surface layer mixture moisture content changes, moisture content should be supplemented and keep water content；When using Stabilized Materials as underlayment,
With a thickness of 10 20cm, construct by semi-rigid type base or bitumen construction requirement；
Underlayment paves to be paved using pellet paver, and configuration pneumatic-tired rollers carry out rubbing and roll, and improves base roadbed
With roll effect；
Step 3: the construction of semi-rigid or rigid base:
The construction of semi-rigid or rigid base is carried out on underlayment, semi-rigid or rigid base should be within the delay time of mixture
One time integral construction is completed；Pneumatic-tired rollers are configured simultaneously carry out rubbing and roll, improve and compactness of subbase and roll effect；
Step 4: semi-rigid or rigid base's health:
Health material is covered in the semi-rigid or rigid base that construction is completed, covering health material should be absorption water material and adds
Plastic film keeps moisture content and temperature with benefit；Semi-rigid type base health is no less than 7 days, and rigid base's health is no less than 14 days；
Step 5: the milling of semi-rigid or rigid base's surface soft layer is removed and is cleaned:
(1) milling of semi-rigid or rigid base's surface soft layer is reconnoitred except thickness:
Check that flatness absolute value, surface coarse aggregate isolate thickness, coarse aggregate maximum by core boring sampling, 8 10 meters of double check with a cores
Partial size, vibrated roller cause coarse aggregate crushing in surface layer to decompose partial size, laitance thickness, eliminate hidden danger of quality, intensity drop with maximum
Low layer and be unevenly target, keeps semi-rigid or rigid base from milling except uniform, closely knit, smooth, coarse after the soft layer of surface
For principle, determine the milling of semi-rigid or rigid base's surface soft layer except thickness；It is for semi-rigid type base coarse aggregate maximum material diameter
31.5mm's, selection milling is except with a thickness of 20 ~ 35mm；Rigid base's selection milling removes 5 10mm, and the specific divider value that mills should be by detailed
Investigation and analysis determine；
Check flatness absolute values along 8 10 meters of double check with a cores of length, mode is to be drawn to set a meter font along road surface with line, width with
Road surface is wide, and length is 8 10 meters, and the relative position then detected between each line and road surface is poor, the final flatness for obtaining road surface
Absolute value；
(2) inserted link hanging wire:
To guarantee that the milling of semi-rigid or rigid base's surface soft layer is removed except thickness is milled by the thickness of probe, few weak base of milling
Soft layer hidden danger of quality is left in thickness degree, many millings, needs to be milled according to inquiry agency except soft layer thickness value, combining road is vertical
Section, the requirement of plane geometry data target, fix wire with screw rod drill rod along longitudinal direction in semi-rigid or rigid base two sides, make
Wire tightens no downwarp, removes semi-rigid or rigid base's surface soft layer thickness reference line as milling；
(3) milling of semi-rigid or rigid base's surface soft layer removes:
According to the reference line that inserted link hanging wire determines, using wide cut milling machine by milling except thickness milling removes semi-rigid or rigid base surface
Soft layer, and make to leave rough surface；
(4) it cleans milling and removes face:
After the milling of semi-rigid or rigid base's surface soft layer removes, the milling face of removing is cleaned with strength road sweeper, again with 9 after cleaning
Cube or more air compressor machine clean the dust and discrete particles material left；
(5) detection cleans milling and removes face quality:
Semi-rigid or rigid base surface cleans milling except behind face, arrangement engineers and technicians remove face to the milling after cleaning and draw in the net
Formula walking is visually inspected, and when weak point or face are left in discovery part, must be removed again with milling machine milling, be removed face to milling with strength road sweeper
It is cleaned, cleans the dust and discrete particles material left with 9 cubes or more of air compressor machine again after cleaning；Check that part is left
Weakness point or when face, is equipped with deflection testing, determines qualitative variability point with the numerical value difference between single-point, and give milling eliminate,
It cleans；
(6) to milling except face dust suction, water is clean, dust suction again:
After removing face dust suction to milling with Strongh vacuum cleaner, it is clean that water is rinsed with clean water, is inhaled again with strength after substantially dry
Dirt device is to water face cleaning dust suction, immediately following construction spread permeable layers pitch, to cannot spread permeable layers pitch in time, need to take measures pair
Working face after the clean dust suction of water is protected, and prevents secondary pollution from leaving hidden danger of quality；
The semi-rigid type base is using framework compact type or with the cement stabilized type base of anti-cracking function gradation and grinding coagulation
Soil matrix layer；
Step 6: permeable layers pitch sprinkling:
Milling is except face dust suction, water is clean, again after dust suction, immediately following construction spread permeable layers pitch；
Step 7: the construction of waterproof bond stress absorbed layer:
The construction of permeable layers pitch sprinkling finishes, and constructs immediately following construction waterproof bond stress absorbed layer；
Step 8: the construction of pitch cutting optimal:
The construction of waterproof bond stress absorbed layer finishes, after spraying adhesion coating pitch, qualitative variability point or variation face to milling again,
It is paved in advance with cutting optimal bitumen specifications material and is densified to regulation compactness and makes up a deficiency concordantly, be sprinkled with sticking layer oil, full width width is immediately following applying
Work pitch cutting optimal；
Step 9: asphalt uplayer construction:
The construction of pitch cutting optimal finishes, after spraying adhesion coating pitch, immediately following construction asphalt uplayer.
2. non-flexible foundation bituminous pavement entirety thick plate structure construction method according to claim 1, it is characterised in that: step
The rapid 7 waterproof bond stress absorbed layer uses modified emulsified asphalt slurry seal or modified asphalt macadam sealing.
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